Fence post extension



FIG. 1 is a perspective front view of a fence post extension showing ournew design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 1;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The fence post extension is shown with a symbolic break in its length.The appearance of any portion of the article between the break linesforms no part of the claimed design.

CLAIM The ornamental design for a fence post extension, as shown anddescribed.